KR200153686Y1 - Microwave oven - Google Patents

Abstract

The present invention relates to a cooking plate support plate of a microwave oven, the purpose of which is to improve the cooking plate on which the cooking plate is placed to improve the cooking efficiency of the workpiece.

The cooking plate support plate 60 of the microwave oven according to the present invention is provided with a support portion 61 protruding in an annular shape on the rim to support the cooking plate 50 spaced apart, the upper portion of the center 62 and the support portion 61 thereof. The first guide hole 621 and the second guide hole 614 is perforated, through which the high frequency is irradiated to the workpiece through the lower surface of the cooking dish 50 has the advantage that the cooking efficiency of the microwave is improved. have.

Description

Microwave Cooking Plate Support Plate

The present invention relates to a microwave oven for cooking food using a magnetron, and more particularly to a cooking plate support plate of a microwave oven to rotatably support a cooking plate inside the cooking chamber.

In general, a microwave oven is a device that cooks food by friction heat between molecules by repeatedly converting a high frequency of 2450 MHz fundamental wave into a cooking chamber in a magnetron to repeatedly convert a molecular array of moisture contained in the food.

The microwave oven having such a function is provided such that a cooking chamber having an open surface and an electric equipment compartment in which the electric equipment is mounted are partitioned inside the main body forming the exterior. And the door is hinged to the main body front side so as to open and close the open surface of the cooking chamber.

The electronics compartment is equipped with a magnetron that generates high frequency radiation to the cooking chamber, a high pressure transformer for applying a high voltage thereto, a cooling fan for cooling the magnetron and a high voltage transformer, and the like, and a control unit is provided at the front side of the electrical equipment compartment.

And inside the cooking chamber is provided with a cooking plate on which the workpiece is placed, and a support plate for supporting it from the bottom. The support plate is rotatably installed so that the high frequency is uniformly irradiated to the workpiece and cooked evenly. To this end, a driving unit for generating power is mounted at the bottom of the cooking chamber, and an end portion of the rotary shaft of the driving unit is coupled to the center bottom of the supporting plate, such that the supporting plate on which the cooking plate is placed is rotated according to the rotation of the rotating shaft of the driving unit.

When the cooking object is put into the microwave oven configured as described above and operated through the control unit, a high frequency of 2450 MHz fundamental wave is emitted from the magnetron into the cooking chamber. As the high frequency radiation is radiated, the cooked matter is repeatedly converted to a molecular sequence of moisture contained therein, whereby heat is generated to cook. In addition, the support plate is rotated by the drive unit, the high frequency is uniformly irradiated to the workpiece, the cooking is even.

On the other hand, in recent years, microwave ovens have been commercially installed to install cooking plates from the bottom of the cooking chamber at a predetermined interval so that the high frequency reflected from the bottom of the cooking chamber is allowed to pass through the cooking dish.

However, since the cooking dish is simply placed on a supporting plate on a metal plate rotatably installed, most microwaves are reflected by the supporting plate. That is, since the high frequency does not penetrate the support plate made of metal, and there is no free space through which the high frequency can pass between the upper portion of the support plate and the lower surface of the cooking plate, the high frequency irradiation through the lower surface of the cooking plate is hardly made.

As a result, some of the high frequency waves do not penetrate the support plate and are reflected and disappeared by heat, thereby limiting the improvement in cooking efficiency.

The present invention is to solve this problem, the object of the present invention is to improve the cooking efficiency of the cooking plate of the microwave oven to improve the efficiency of the cooking plate so that the cooking plate is irradiated to the workpiece even when the high frequency passes through the bottom of the cooking plate To provide a backing plate.

1 is a cross-sectional view showing the internal configuration of the microwave oven to which the present invention is applied.

Figure 2 is a perspective view showing the support plate of the cooking plate according to the present invention.

* Explanation of symbols for main parts of the drawings

50: cooking plate 60: support plate

61 support portion 611 support surface

612: inner gradient surface 614: second guide hole

62: Central Committee 621: First guide

63: coupling projection 64: shaft coupling portion

65: opening

The present invention for achieving this purpose, the main body is provided to partition the cooking chamber and the electrical equipment compartment in which the electric heater is installed on the ceiling surface, the magnetron is installed in the electrical equipment compartment radiates high frequency to the cooking chamber, the high frequency radiated from the magnetron In a microwave oven with a dish-shaped support plate rotatably spaced from the bottom of the cooking chamber to be irradiated evenly to the water, the cooking plate made of a material that is placed on the support plate, the material to be transmitted and high-frequency transmission, The supporting plate is provided at the rim and protrudes upwards to form a space between the cooking plate and the supporting plate to support the cooking plate, and the high frequency is irradiated into the space formed by the supporting part, and the cooking plate penetrates the bottom of the cooking plate. First guides and papers perforated on the center of the base to be irradiated with water It characterized in that it comprises a second guide hole perforations along the upper surface portion.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. 1 is a schematic cross-sectional view of a microwave oven to which the present invention is applied, and FIG. 2 is a fraud diagram of a support plate according to the present invention.

As shown in FIG. 1 and FIG. 2, the microwave oven to which the present invention is applied is formed such that the cooking chamber 20 and the electrical equipment compartment 30 are partitioned inside the main body 10 forming the outer body.

The electrical equipment room 30 is equipped with a large number of electrical equipment such as a magnetron 31 which oscillates high frequency to radiate to the cooking chamber 20, and a high voltage transformer 32 which applies a high voltage to the magnetron 31.

And the cooking chamber 20 is formed so that the front side of the main body 10 is open, the door (not shown) for opening and closing the open surface is hinged. The cooking chamber 20 is provided with a turntable type cooking plate 50 on which a workpiece is placed on the bottom surface, and an electric heater 70 generating heat on the ceiling surface is installed. The structure of the eagle will be described in more detail. Is as follows.

First, the bent electric heater 70 is mounted on the ceiling side of the cooking chamber 20, which is intended to produce a kind of grill effect of generating heat by baking heat.

And the disk-shaped cooking plate 50 is made of a ceramic material to transmit high frequency, is mounted on the upper surface of the support plate 60 that is rotated by the drive of the drive unit 40 by rotating integrally with the workpiece This high frequency is irradiated uniformly. To this end, a driving unit 40 is mounted on the bottom of the cooking chamber 20 of the main body 10, and an end portion of the rotation shaft 41 of the driving unit 40 extends through the bottom surface of the cooking chamber 20 to an upper portion thereof. In addition, the shaft engaging portion 64 is formed at the center of the bottom surface of the disk-shaped support plate 60, and the rotary shaft 41 end is fitted thereto to be coupled thereto.

Accordingly, the supporting plate 60 is installed to be spaced apart from the bottom of the cooking chamber 20 by a predetermined interval, and is coupled to the rotation shaft 41 of the driving unit 40 to rotate in a turntable manner when driving the driving unit 40.

On the other hand, the support plate 61 which supports the cooking plate 50 spaced apart from the upper surface and forms the space 80 therebetween is provided in the support plate 60 which rotates by the drive part 40 in ring shape. The support portion 61 protrudes upward along the edge of the support plate 60 to support the cooking dish 50, which is a support surface 611 smoothly formed to be in surface contact with the bottom surface of the cooking dish 50 and both sides thereof. And gradient surfaces 612 and 613 that are inclined to each other.

And, in order to prevent the separation of the cooking plate 50 during the cooking operation, the support plate 63 is provided on the support plate 60, the coupling groove 52 and the protruding jaw 51 is formed on the lower surface of the cooking plate 50. It is. Coupling projection (63) is formed to protrude upward from the center of the support plate (60). In addition, the coupling groove 52 is formed to be concave in the center of the bottom surface of the cooking plate 50 so that the coupling protrusion 63 can be inserted with ease, the projection jaw 51 is the inner gradient surface 612 of the support portion 61 and The bottom of the cooking plate 50 is provided to protrude downward in contact with the edge portion. Therefore, when the cooking plate 50 is placed so that the coupling protrusion 63 is inserted into the coupling groove 52, the space between the support surface 611 of the support part 61 and the bottom surface of the cooking plate 50 is in contact with each other. 80, the protruding jaw 51 is in contact with the inner gradient surface 612 of the support 61, so that the cooking dish 50 is firmly seated on the upper surface of the support plate 60.

In addition, as shown in FIG. 2, the disk-shaped support plate 60 is irradiated with high frequency through the lower surface of the cooking plate 50, so that the cooking efficiency is improved, and the plurality of high frequency guide holes 614 and 621 and the opening 65 are improved. ) Is perforated. The high frequency guide hole is provided to be spaced apart at regular intervals along a plurality of first guide holes 621 radially perforated on the central portion 62 of the support plate 60 and the support surface 611 of the support portion 61. The first guide hole 621 is divided into a plurality of second guide holes 614 slightly smaller than the diameter of the. The opening 65 is a portion wide open between the center 62 and the support 61 of the support plate 60, through which the heat emitted from the electric heater 70 is transmitted to the bottom surface of the cooking plate 50 through high frequency transmission. Delivered directly.

Next will be described the operation of the microwave oven according to the present invention configured as described above.

First, when the cooking plate 50 on which the workpiece is placed is placed on the base plate 60, as described above, the coupling protrusion 63 is inserted into the coupling groove 52 and the protruding jaw 51 is supported by the support 61. Contact the inner gradient surface 612). In addition, by supporting the support surface 611 of the support portion 61 in contact with the lower surface of the cooking plate 50, the cooking plate 50 is spaced apart from the upper surface of the support plate 60 to form a space 80 therebetween.

In this state, when the door (not shown) is closed and operated, a high frequency of 2450 MHz fundamental wave is radiated from the magnetron 31 into the cooking chamber 20, and the support plate 60 is rotated by the driving unit 40 in a turntable manner. As a result, the cooking object placed on the cooking plate 50 is irradiated with high frequency uniformly to cook.

On the other hand, since the cooking plate 50 is spaced apart to form the space 80 from the upper surface of the support plate 60, the high frequency is the first guide hole 621, the second guide hole 614 and the opening 65 Even through the lower surface of the cooking plate 50 is irradiated to the workpiece. That is, the high frequency radiated from the magnetron 31 to the cooking chamber 20 is reflected by colliding with the bottom surface of the cooking chamber 20 due to the properties such as absorption, transmission, and reflection depending on the object to be contacted, and the first guide hole 621. The second guide hole 614 and the opening 65 passes directly through the cooking plate 50 and at the same time a part of the dispersion in the space 80.

Accordingly, the workpiece placed on the cooking plate 50 that rotates is not only directly irradiated with the high frequency radiated into the cooking chamber 20, but also formed on the center portion 62 and the support 61 of the support plate 60. The lower part of the workpiece placed in contact with the upper surface of the cooking plate 50 is irradiated at the same time by the high frequency transmitted through the lower surface of the cooking plate 50 through the guide hole 621, the second guide hole 614, and the opening 65. The cooking efficiency is further improved.

In addition, when the electric heater 70 is driven, the heat generated therefrom circulates inside the cooking chamber 20, and thus the cooked product that rotates is cooked by heat. At this time, the heat discharged from the electric heater 70 is evenly transmitted to the lower surface of the cooking plate 50 through the first guide hole 621, the second guide hole 614, the opening 65 and the space 80. Cooking of the dishes placed therein is uniform.

As described above in detail, the cooking plate support plate of the microwave oven according to the present invention supports the cooking plate spaced apart through the support portion, and the first guide hole and the second guide hole, etc. are drilled on the center and the support portion thereof. The high frequency is also irradiated to the workpiece through the bottom of the cooking dish has the advantage that the cooking efficiency of the microwave is improved.

Claims (1)

The main body 10 provided with the cooking chamber 20 and the electrical equipment compartment 30 in which the electric heater 70 is installed on the ceiling surface, and the electrical equipment 70 are installed in the electrical equipment compartment 30 to radiate high frequency to the cooking chamber 20. Magnetron 31, and a disk-shaped support plate 60, the support plate provided rotatably spaced from the bottom surface of the cooking chamber 20 so that the high frequency radiated from the magnetron 31 is evenly irradiated to the workpiece. (60) In the microwave oven having a cooking plate (50) made of a material which is placed on a workpiece and has a high frequency transmission therethrough, the support plate (60) is provided at an edge portion of the cooking plate (50). And an annular support portion 61 protruding upward to form a space 80 between the support plate 60 and the support plate 60, and the space 80 formed by the support portion 61. High frequency is irradiated to the bottom of the cooking plate 50 The first guide hole 621 and a plurality of second guide hole 614 perforated along the upper surface of the support portion 61 and the plurality of perforations on the center 62 of the support plate 60 to be irradiated to the workpiece Microwave cooking plate support plate characterized in that it comprises.